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#add shine to sphere
dawn fossilBOT
cobalt aspen
#include "rtweekend.h"
#include "camera.h"
#include "color.h"
#include "hittable_list.h"
#include "material.h"
#include "sphere.h"
int main() {
hittable_list world;
auto material_ground = make_shared<lambertian>(color(0.8, 0.8, 0.0));// floor colour
auto material_center = make_shared<lambertian>(color(1.0, 0.0, 0.0));//middle circle colour
auto material_left = make_shared<metal>(color(0.0, 1.0, 0.0));//left circle colour
auto material_right = make_shared<metal>(color(0.0, 0.0, 1.0));//right circle colour
world.add(make_shared<sphere>(point3(0.0, -100.5, -1.0), 100.0, material_ground));
world.add(make_shared<sphere>(point3(0.0, 0.0, -1.0), 0.5, material_center));
world.add(make_shared<sphere>(point3(-1.0, 0.0, -1.0), 0.5, material_left));
world.add(make_shared<sphere>(point3(1.0, 0.0, -1.0), 0.5, material_right));
camera cam;
cam.aspect_ratio = 16.0 / 9.0;
cam.image_width = 400;
cam.samples_per_pixel = 100;
cam.max_depth = 50;
cam.render(world);
}
main.cpp
eager knot
Learn about Phong shading.
cobalt aspen
is it hard?
eager knot
No.
cobalt aspen
ok. ill try.
but im kinda in a hurry. so i hope it doesnt take long
also im a beginner so im not sure if im able to implement the math properly
cobalt aspen
i still dont know how to do phong shading.
was doing something else. sorry
could you help with an example?
I just want to get this done quick. I’ll understand it later.
brave blaze
there's no point in doing this quick and trying to understand it later
you either understand it and do it, or you don't
i'm also not quite sure what exactly you're looking for
cobalt aspen
i'm also not quite sure what exactly you're looking for
i need to write some code so the spheres can have a specular reflection
its getting pretty late and i want it to be done before i go
brave blaze
what kind of specular reflection exactly?
cobalt aspen
like reflecting light
brave blaze
um
cobalt aspen
ill show a picture
brave blaze
your spheres already look reflective
brave blaze
isn't that gonna look weird to have a white spot on top of a real reflective surface there?
brave blaze
because it's not how things look in reality
cobalt aspen
im not trying to achieve realism right now.
brave blaze
well, I mean, the picture up there is almost certainly using phong shading
so you'd just implement that then
formula's on wikipedia 🤷♂️
cobalt aspen
kinda like this
this one isnt my sphere
brave blaze
yes
cobalt aspen
the first one is mine. it doesnt have phong shading i dont think.
brave blaze
it doesn't
brave blaze
kinda like this
what I'm saying is that if you want your spheres to look like this one, you need to implement phong shading. because that's how you get that result.
cobalt aspen
im not sure how to implement it though.
brave blaze
well, read up on how it works and then implement it, like you did with your spheres up there 🤷♂️
cobalt aspen
the thing is i wasnt trying to understand it. i was just copying and pasting
brave blaze
well, then you'll have to go and actually understand it first
cobalt aspen
do i have to?
brave blaze
I mean you don't have to I guess
cobalt aspen
could you help me out so it can go quicker?
brave blaze
but if you want to implement this thing you want to implement, understanding what you're doing will be necessary
cobalt aspen
yeah i know. ill have to understand this if i want to build my own. but thats not what i want to do right now.
brave blaze
well, the fact that you want smth isn't gonna change anything about the fact that you still need to go and do it
cobalt aspen
fine ill read about it but i dont think im gonna understand it.
brave blaze
that probably means you'll have to go further back and catch up with yet more basics that you likely skipped along the way as well
brave blaze
I cannot just snip my fingers and make you understand stuff. you can only do that yourself, through study and practice.
cobalt aspen
im not trying to understand it though.
brave blaze
without understanding it, you won't be able to do it though.
cobalt aspen
thats what i did for my old code.
brave blaze
well, and now you see how far that got you. this is the point where skipping on actually understanding what you're doing has caught up with you, and where you'll just have to go and actually work on understanding what you're doing.
not sure what else you want me to tell you
cobalt aspen
can you just type it for me so i can go to sleep?
brave blaze
no
cobalt aspen
ffine ill read.
brave blaze
that would be a waste of both our time
cobalt aspen
wouldnt even take that long for you.
brave blaze
it likely wouldn't. it would still be a waste of time since you're not even trying to actually understand what's going on. what would be the point?
cobalt aspen
ill understand it later when i have the time
also i havnt learned nothing while building this project
thank you for trying to help anyway
dawn fossilBOT
@cobalt aspen Has your question been resolved? If so, type !solved :)